离岸价格
获取最新报价2250 / Metric Ton ( Negotiable )
|Minimum Order
位置:
South Africa
最小订单价格:
最小订单:
550 Metric Ton
包装细节:
25Kg/paperboard barrel
交货时间:
18 Days
供应能力:
3500 Metric Ton per Month
付款方式:
T/T, D/P, Western Union, Money Gram
South Africa
联系人 Mr. Hans
22 triomph street, Johannesburg, Gauteng
Polyvinyl alcohol(PVA) has excellent film forming, emulsifying,and adhesive properties.It is also resistant to oil, grease and solvent. It is odorless and nontoxic. It has high tensile strength and
flexibility, as well as high oxygen and aroma barrier properties. However these properties are dependent on humidity, in other words, with higher humidity more water is absorbed.
The water, which acts as a plasticiser, will then reduce its tensile strength, but increase its elongation and tear strength. PVA is fully degradable and is a quick dissolver. PVA has
a melting point of **0°C and ******0 C for the fully hydrolysed and partially hydrolysed grades, respectively. It decomposes rapidly but exhibits crystallinity as the hydroxyl groups are small enough to fit into the lattice without disrupting it.
